NQB1A2 Introductions

NQB1A2 series circuit breaker (hydraulic electromagnetic circuit breaker) is suitable for rated current 1A-100A, power system with rated voltage of AC230/400V (50/60Hz) or DC80V and below, used for cutting and short-circuit protection, can also be used for infrequent switching on and off. It can be widely used inYacht, ship, computers and peripheral equipment, industrial automatic control systems, telecommunications equipment, universal power systems, UPS uninterruptible power supplies, railway locomotives, marine electrical systems, aerospace, elevator control systems and mobile power equipment.

Product Features and Advantages

● Hydraulic electromagnetic tripping device is adopted to integrate overload trip and short circuit tripping, so it is also called full electromagnetic circuit breaker;

● The tripping performance is determined only by the magnetic flux generated by the coil, which is less affected by the change of the ambient temperature, so it can be derated without considering the high temperature;

● The circuit breaker has no thermal components and does not require cooling time. As long as the fault current disappears, it can be closed again immediately;

● The viscosity of the hydraulic fluid is affected by temperature changes. High viscosity at low temperature, long delay time, sufficient additional time when starting cold equipment, low viscosity at high temperature, short delay time, circuit breaker can be quickly tripped to protect the heat load, so this "inverse time limit" is beneficial. Overload protection;

● The tripping characteristics of the circuit breaker are determined by the cooperation of the coil and the oil damper. The operating characteristics of the circuit breaker can be changed by changing the parameters of the coil and the oil damper. Therefore, it is convenient to derive the current specifications and trip curves required by the user;

● The current setting value is accurate and the motion repetition error is small;

● Wiring methods are diversified, such as screw type, connecting piece type, plug-in connection column, screw-up type, screw type, etc., which are convenient for users to select according to actual needs;

● Diversified installation methods, screw mounting, flush mounting, and easy integration into equipment;

● Diversified operation modes, with long handle, short handle and rocker type operation, can choose different operation modes according to different design occasions to ensure the safe operation of the equipment;

● Small size and small size can save space in the cabinet;

● Operating ambient temperature:-30 °C to+70 °C

Technical Parameters

● Poles: 1P, 2P, 3P, 4P

● Rated current: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 23A, 25A, 32A, 40A, 50A, 63A, 80A, 100A

● Rated working voltage: AC230V (220-250V) / AC400V (380-415V), DC80V (12-80V)

● Breaking capacity: 2000A

● Mechanical life: 10,000 times

● Electrical life: 6000 times

● Compliance with standards: 1EC60934, EN63934, Gb17701

Use ambient temperature/storage temperature

● Use environmental temperature: -40℃～+85℃

● Storage temperature: -40℃～+85℃

● Altitude conditions: The altitude of the installation location <2000M

● Use relative humidity/storage relative humidity

The relative humidity of the atmosphere should not exceed 50%when the surrounding air temperature is+40℃. At a lower temperature, it can be allowed to have high relative humidity.

For example: When the temperature of the surrounding air is 20℃, the relative humidity can reach 90%. Due to the occasional condensation of temperature changes, users should take special protection measures.